Laser cutting device for metal plate machining

Abstract

The invention relates to the technical field of plate machining, in particular to a laser cutting device for metal plate machining. Comprising a machine body, the machine body is provided with a movement assembly, and the movement assembly is provided with a laser cutting head; the cooling shell is fixedly connected to the laser cutting head, the cooling shell is filled with a cooling medium, the cooling shell is provided with a motor and a pump body, and the motor is provided with an upper output shaft and a lower output shaft; the first pipe is fixedly connected and communicated between the cooling shell and the inlet of the pump body; and the second pipe is fixedly connected and communicated between the cooling shell and the outlet of the pump body. Heat generated in the working process of the laser cutting head is taken away through the cooling medium in the circulating process, so that the laser cutting head is cooled, and the situation that due to long-time working of the laser cutting head, the temperature of the laser cutting head is continuously accumulated and increased, abrasion and aging of the laser cutting head are accelerated, and the service life of the laser cutting head is shortened is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of sheet metal processing, and in particular to a laser cutting device used for metal sheet metal processing. Background Art

[0002] Metal sheets are raw materials used in many fields. They have the characteristics of mature processing technology, high machinability and easy transportation. Therefore, as one of the most common products in steel mills, the production specifications of metal sheets are usually large. When used, they need to be cut according to actual needs. Especially in the production of steel structures, metal sheets need to be cut into specific shapes, such as round, square, etc., to meet design requirements. The existing cutting methods are divided into mechanical cutting, thermal cutting and water jet cutting. Among them, laser cutting in thermal cutting has the characteristics of high cutting accuracy and high cutting efficiency.

[0003] During the laser cutting process, since the laser cutting head absorbs most of the laser energy, this energy will eventually be converted into heat, that is, the laser cutting head is usually accompanied by high temperature during laser cutting, and most of the existing laser cutting devices do not have a cooling system, but only naturally cool through the outside air. In this way, there is a problem that the laser cutting head works at high power for a long time, causing its temperature to continue to accumulate and rise, thereby accelerating the wear and aging of the laser cutting head and reducing its service life. Therefore, the present application proposes a laser cutting device for metal sheet processing to solve the above-mentioned problems. Summary of the invention

[0004] In order to overcome the shortcomings mentioned in the above technical background, the present invention provides a laser cutting device for metal sheet processing.

[0005] The technical implementation scheme of the present invention is: a laser cutting device for metal sheet processing, comprising: a body, the body is provided with a motion assembly, the motion assembly is provided with a laser cutting head; a cooling shell, fixedly connected to the laser cutting head, the cooling shell is filled with a cooling medium, the cooling shell wraps the laser cutting head, the cooling shell is installed with a motor and a pump body, the motor has two upper and lower output shafts, the output shaft on the upper side of the motor is fixedly connected to the power input end of the pump body; a first pipe, fixedly connected and connected between the cooling shell and the inlet of the pump body; a second pipe, fixedly connected and connected between the cooling shell and the outlet of the pump body; an air suction mechanism, arranged on the cooling shell, for making the air in the adjacent area of ​​the laser cutting head flow, thereby cooling the laser cutting head.

[0006] Preferably, the air suction mechanism includes: a processing part, which is rotatably connected to the cooling shell, and a fan is fixedly connected to the output shaft on the lower side of the motor; a first shell, which is fixedly connected to the cooling shell, and the first shell is rotatably connected to the processing part; a second shell, which is fixedly connected to the motor, and the second shell wraps the fan of the motor; a third tube, which is fixedly connected and connected between the first shell and the second shell, and the processing part is provided with first holes arranged at intervals.

[0007] Preferably, there are two inclined surfaces with different inclined directions at the lower part of the inner side of the processing element, which are used to guide the flowing air, so as to facilitate cooling of the laser cutting head.

[0008] Preferably, the first hole is arranged obliquely, and a central axis of the first hole is parallel to an adjacent inclined surface on the inner side of the processing member.

[0009] Preferably, the cooling shell is fixedly connected to a third shell, the third shell is connected to the processing element, the third shell is fixedly connected to the second shell and connected to a fourth pipe, the processing element is provided with a ring array of second holes, and the second holes are inclined.

[0010] Preferably, there is a first cavity between the processing element and the cooling shell, a second cavity and a first channel are provided in the processing element, the first cavity and the second cavity are both connected to the first channel, the processing element is equipped with a ring array of nozzles, and the nozzles are connected to the second cavity.

[0011] Preferably, it also includes: a collecting shell, fixedly connected to the third shell, the collecting shell is rotatably connected to the processing element, the collecting shell is provided with through holes arranged at intervals, plugs are provided in the through holes on the collecting shell, and the processing element is provided with second channels arranged at intervals, and the second channels are connected to the collecting shell.

[0012] Preferably, the lower wall on the inner side of the collecting shell is arranged in an inclined state to facilitate the collection of impurities.

[0013] Preferably, there is an angle between the central axis of the second channel and the horizontal, and the distance between the second channel and the laser cutting head gradually increases from top to bottom.

[0014] Preferably, an interception net is fixedly connected to the inner side of the processing element, the interception net is in contact with the laser cutting head, and the height of the interception net is higher than the height of the second channel.

[0015] Compared with the prior art, the present invention has at least the following advantages: the present invention removes the heat generated during the operation of the laser cutting head through the cooling medium in the circulation process, thereby cooling the laser cutting head and preventing the laser cutting head from working at high power for a long time, which causes its temperature to accumulate and rise continuously, thereby accelerating the wear and aging of the laser cutting head and reducing its service life; the first hole is used to start extracting the air in the adjacent area of ​​the laser cutting head 1, so that the air in the adjacent area of ​​the laser cutting head flows to generate airflow, thereby removing the heat generated during the operation of the laser cutting head, thereby improving the protection of the laser cutting head, and at the same time, the flowing air also absorbs the harmful gases and splashes generated during the cutting process, preventing the harmful gases generated during the cutting process from endangering the health of the staff, and at the same time At the same time, the probability of (molten) splashes falling on the surface of the metal sheet and sticking to it is reduced, thereby ensuring the normal use of the metal sheet after cutting; the position of the air extraction from the first hole is changed by the rotating processing part, thereby expanding the exhaust range and increasing the amount of extracted air, that is, obtaining more "coldness" from the outside world, thereby improving the cooling and heat dissipation effect of the laser cutting head, and absorbing the heat generated in the cutting process through the gasification of water mist to further create "coldness", thereby improving the cooling and heat dissipation of the laser cutting head and improving the cutting quality; a "filter layer" is formed by the rotating interception net to separate the water mist and splashes from the airflow, and at the same time, the intercepted water mist and splashes are thrown outward by the rotating interception net, thereby improving the removal effect of the water mist and splashes and ensuring the normal progress of the cutting work. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the motion assembly and the cooling shell of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the motion assembly, laser cutting head and cooling shell of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the laser cutting head and the processing part of the present invention; Figure 5 It is a three-dimensional structural cross-sectional view of the cooling shell and the processing element of the present invention; Figure 6 It is a three-dimensional structural cross-sectional view of the processing element and the first shell of the present invention; Figure 7 It is a three-dimensional structural cross-sectional view of the cooling shell and the processing element of the present invention when they rotate relative to each other; Figure 8 It is a three-dimensional structural exploded view of the cooling shell and the parts thereon of the present invention.

[0017] The meaning of the reference numerals in the figure: 101: machine body, 102: moving assembly, 103: metal sheet, 1: laser cutting head, 2: cooling shell, 3: motor, 4: pump body, 5: first tube, 6: second tube, 701: processing part, 702: first shell, 703: second shell, 704: third tube, 705: first hole, 801: third shell, 802: fourth tube, 803: second hole, 901: first cavity, 902: second cavity, 903: first channel, 904: nozzle, 1001: collecting shell, 1002: plug, 1003: second channel, 11: interception net. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] like Figure 1-Figure 5 As shown, a laser cutting device for metal sheet processing is proposed to solve the problem that the existing laser cutting device does not actively cool the laser cutting head 1 during operation, resulting in an overly high temperature of the laser cutting head 1, thereby affecting the normal cutting operation. The device comprises: a body 101, the body 101 is provided with a motion assembly 102, and the motion assembly 102 is provided with a laser cutting head 1; a cooling shell 2, fixedly connected to the laser cutting head 1, the cooling shell 2 is filled with a cooling medium, the cooling shell 2 wraps the laser cutting head 1, the cooling shell 2 is installed with a motor 3 and a pump body 4, the motor 3 has two upper and lower output shafts, and the output shaft on the upper side of the motor 3 is fixedly connected to the power input end of the pump body 4; a first pipe 5, fixedly connected and connected between the cooling shell 2 and the inlet of the pump body 4; a second pipe 6, fixedly connected and connected between the cooling shell 2 and the outlet of the pump body 4; an air suction mechanism, arranged on the cooling shell 2, for making the air in the adjacent area of ​​the laser cutting head 1 flow, thereby cooling the laser cutting head 1.

[0020] In the above scheme, the motion assembly 102 is a prior art, which is used to drive the laser cutting head 1 to move along the x-axis, y-axis and z-axis. The cooling medium in the cooling shell 2 includes but is not limited to water. A heat sink is arranged on the outside of the cooling shell 2 to increase the contact area with the external environment and improve the heat dissipation effect. The first tube 5 and the second tube 6 are respectively located at the upper and lower parts of the cooling shell 2. When using this device, the staff places the metal plate 103 on the machine body 101, and then starts the motor 3. The output shaft on the upper side of the motor 3 drives the pump body 4 to work. The pump body 4 draws water from the cooling shell 2 through the first tube 5, and then injects the water back into the cooling shell 2 through the second tube 6, so that the cooling shell 2 The water is circulated, and then the movement path of the laser cutting head 1 is controlled by the motion assembly 102 to cut the metal plate 103 accordingly. The water in the circulation process is used to remove the heat generated during the operation of the laser cutting head 1, so as to cool the laser cutting head 1 and prevent the laser cutting head 1 from working at high power for a long time, which causes its temperature to continue to accumulate and rise, thereby accelerating the wear and aging of the laser cutting head 1 and reducing its service life. During the cutting process, the air suction mechanism is used to make the air in the cutting area flow, so as to further cool the laser cutting head 1 and stabilize the cutting state of the laser cutting head 1. After the cutting work is completed, all parts are reset and the power is turned off.

[0021] like Figure 3-Figure 8 As shown, the air suction mechanism includes: a processing part 701, which is rotatably connected to the cooling shell 2, and there are two inclined surfaces with different inclination directions on the lower part of the inner side of the processing part 701, which are used to guide the flowing air, so as to facilitate cooling of the laser cutting head 1, and a fan is fixedly connected to the output shaft on the lower side of the motor 3; a first shell 702, which is fixedly connected to the cooling shell 2, and the first shell 702 is rotatably connected to the processing part 701; a second shell 703, which is fixedly connected to the motor 3, and the second shell 703 wraps the fan of the motor 3; a third tube 704, which is fixedly connected and connected between the first shell 702 and the second shell 703, and the processing part 701 is provided with first holes 705 arranged at intervals, and the first holes 705 are inclined, and the central axis of the first hole 705 is parallel to the adjacent inclined surface on the inner side of the processing part 701.

[0022] In the above scheme, there are two upper and lower inclined surfaces (in the shape of a "truncated cone") on the inner side of the processing element 701, the diameter of the upper inclined surface of the processing element 701 gradually decreases from top to bottom, and the diameter of the lower inclined surface of the processing element 701 gradually increases from top to bottom. The lower part of the second shell 703 is a conical shell, and its inner diameter gradually decreases from top to bottom. The third tube 704 is located above the fan on the output shaft at the lower side of the motor 3. The third tube 704 penetrates the adjacent area of ​​the cooling shell 2. The first hole 705 is provided with an exhaust gas treatment material (including but not limited to activated carbon, not shown in the figure) for the cutting process. The harmful gas generated in the laser cutting head 1 is purified, and the first hole 705 is gradually inclined downward from one end away from the laser cutting head 1 to the other end. During the operation of the motor 3, the output shaft on the lower side of the motor 3 drives the fan thereon to rotate together. The fan rotating on the output shaft on the lower side of the motor 3 begins to extract the air in the third tube 704, and then begins to extract the air in the adjacent area of ​​the laser cutting head 1 through the first hole 705, so that the air in the adjacent area of ​​the laser cutting head 1 flows to generate airflow, and then the heat generated by the laser cutting head 1 during operation is taken away, so as to improve the protection of the laser cutting head 1.

[0023] In the process of extracting air from the adjacent area of ​​the outside world through the first hole 705, the range of the extracted air is increased by the inclined surface on the lower side of the processing part 701, and at the same time, the flow state of the air during the extraction process is changed, the degree of air turbulence is increased, the amount of contact between the laser cutting head 1 and the cold air is increased, and the contact uniformity between the two is increased, thereby improving the cooling effect on the laser cutting head 1, stabilizing the working state of the laser cutting head 1, and thus improving the cutting quality of the metal plate 103. At the same time, the flowing air also absorbs the harmful gases and splashes generated in the cutting process, preventing the harmful gases generated in the cutting process from endangering the health of the workers, and reducing the probability of (molten) splashes sticking to the surface of the metal plate 103, thereby ensuring the normal use of the metal plate 103 after cutting.

[0024] like Figure 3-Figure 8 As shown, the cooling shell 2 is fixedly connected to the third shell 801, the third shell 801 is connected to the processing piece 701, the third shell 801 is fixedly connected to the second shell 703 and connected by a fourth tube 802, the processing piece 701 is provided with a second hole 803 in a circular array, the second hole 803 is inclined, there is a first cavity 901 between the processing piece 701 and the cooling shell 2, the processing piece 701 is provided with a second cavity 902 and a first channel 903, the first cavity 901 and the second cavity 902 are both connected to the first channel 903, the processing piece 701 is installed with a nozzle 904 in a circular array, and the nozzle 904 is connected to the second cavity 902.

[0025] In the above scheme, a liquid injection port is provided on the cooling shell 2 for injecting cooling medium therein, and an angle exists between the projection of the central axis of the second hole 803 on the horizontal plane and the projection of the adjacent normal line on the processing element 701 on the horizontal plane, that is, the projection of the central axis of the second hole 803 on the horizontal plane gradually tilts clockwise (such as Figure 6 Taking the top view as an example), it is used to apply torque to the processing part 701, so that the processing part 701 and the cooling shell 2 rotate relative to each other. The nozzle 904 is used to atomize water. The central axis of the nozzle 904 is parallel to the horizontal plane. During the rotation of the fan on the output shaft at the lower side of the motor 3, the generated airflow enters the third shell 801 through the fourth pipe 802, and then the airflow enters the processing part 701, and finally the airflow is discharged through the second hole 803. During the process, the moving airflow will apply torque to the processing part 701, so that the processing part 701 rotates counterclockwise (such as Figure 4 Taking the top view as an example), the processing part 701 will change the position of the first hole 705 for extracting air during the rotation process, so as to expand the exhaust range and increase the amount of extracted air, that is, to obtain more "coldness" from the outside, thereby improving the effect of cooling and dissipating heat for the laser cutting head 1.

[0026] During the water circulation process, when water enters the cooling shell 2 from the second pipe 6, a part of the water enters the first cavity 901, and the part of the water then enters the second cavity 902 through the first channel 903, and is finally discharged through the nozzle 904 in the form of water mist, and forms a "water mist curtain" in the adjacent area. The water mist moves upward under the influence of the airflow, and moves upward together with the adsorbed harmful gases and splashes. After the (molten) splashes come into contact with the water mist, the (molten) splashes solidify rapidly, thereby preventing the splashes from solidifying after contacting the processing part 701 during the upward movement, thereby causing adhesion and affecting subsequent normal use. At the same time, the water mist is used to absorb harmful gases to reduce the emission of harmful gases, and the gasification of the water mist is used to absorb the heat generated during the cutting process, further creating "coldness", thereby improving the cooling and heat dissipation of the laser cutting head 1 and improving the cutting quality.

[0027] like Figure 4-Figure 8As shown, it also includes: a collecting shell 1001, which is fixedly connected to the third shell 801, the collecting shell 1001 is rotatably connected to the processing part 701, the lower wall on the inner side of the collecting shell 1001 is set to an inclined state to facilitate impurity collection, the collecting shell 1001 is provided with through holes arranged at intervals, and plugs 1002 are provided in the through holes on the collecting shell 1001, and the processing part 701 is provided with second channels 1003 arranged at intervals, the second channel 1003 is connected to the collecting shell 1001, there is an angle between the central axis of the second channel 1003 and the horizontal, and the distance between the second channel 1003 and the laser cutting head 1 gradually increases from top to bottom, and an interception net 11 is fixedly connected to the inner side of the processing part 701, the interception net 11 is in contact with the laser cutting head 1, and the height of the interception net 11 is higher than the height of the second channel 1003.

[0028] In the above scheme, the distance between the lower inner wall of the collecting shell 1001 and the horizontal plane gradually decreases from one side close to the laser cutting head 1 to the other side, so as to facilitate the accumulation of impurities. The through holes on the collecting shell 1001 are arranged in left and right mirror images. The plug 1002 is detachable. The interception net 11 is composed of a hard outer frame and a soft inner net, which is used to guide the intercepted "water mist" and impurities. In the process of water mist, harmful gases and splashes moving upward under the influence of airflow (in the process of counterclockwise rotation of the processing part 701), the airflow drives the water mist, harmful gases and splashes along the inclined surface of the lower side of the processing part 701. Move upward (movement trend), and then when the water mist, harmful gas and splashes move upward to an inclined surface higher than the lower side of the treatment part 701, the water mist, harmful gas and splashes are affected by the airflow and move toward the inclined surface on the upper side of the treatment part 701, and then the water mist, harmful gas and splashes move along the inclined surface on the upper side of the treatment part 701 (movement trend), when the water mist and splashes move upward to the second channel 1003, the water mist and splashes enter the second channel 1003, and then under the action of centrifugal force and gravity, the water mist and splashes move obliquely downward along the second channel 1003, and finally enter the collection shell 1001.

[0029] During the counterclockwise rotation of the processing member 701, the processing member 701 drives the intercepting net 11 to rotate counterclockwise together. The rotating intercepting net 11 forms a "filter layer" to separate the water mist and splashing objects from the airflow. At the same time, the rotating intercepting net 11 is used to swing the intercepted water mist and splashing objects outward, thereby improving the removal effect of the water mist and splashing objects and ensuring the normal progress of the cutting work.

[0030] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the contents of the present invention and implement them accordingly. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser cutting device for metal sheet processing, comprising: A machine body (101), the machine body (101) being provided with a motion assembly (102), the motion assembly (102) being provided with a laser cutting head (1); A cooling shell (2) is fixedly connected to the laser cutting head (1), the cooling shell (2) is filled with a cooling medium, the cooling shell (2) wraps the laser cutting head (1), and the cooling shell (2) is installed with a motor (3) and a pump body (4), the motor (3) has two upper and lower output shafts, and the output shaft on the upper side of the motor (3) is fixedly connected to the power input end of the pump body (4); A first pipe (5) fixedly connected to and communicating between the cooling shell (2) and the inlet of the pump body (4); A second pipe (6) fixedly connected to and communicating between the cooling shell (2) and the outlet of the pump body (4); An air suction mechanism is arranged on the cooling shell (2) and is used to make air flow in an area adjacent to the laser cutting head (1), thereby cooling the laser cutting head (1).

2. A laser cutting device for metal sheet processing according to claim 1, characterized in that: The air suction mechanism comprises: A processing element (701) is rotatably connected to the cooling shell (2), and a fan is fixedly connected to the output shaft at the lower side of the motor (3); A first shell (702) is fixedly connected to the cooling shell (2), and the first shell (702) is rotatably connected to the processing element (701); A second shell (703) is fixedly connected to the motor (3), and the second shell (703) wraps the fan of the motor (3); The third tube (704) is fixedly connected to and communicates between the first shell (702) and the second shell (703), and the processing element (701) is provided with first holes (705) arranged at intervals.

3. A laser cutting device for metal sheet processing according to claim 2, characterized in that: The lower part of the inner side of the processing element (701) has two inclined surfaces with different inclined directions, which are used to guide the flowing air, thereby facilitating cooling of the laser cutting head (1).

4. A laser cutting device for metal sheet processing according to claim 3, characterized in that: The first hole (705) is arranged at an angle, and the central axis of the first hole (705) is parallel to the adjacent inclined surface on the inner side of the processing element (701).

5. A laser cutting device for metal sheet processing according to claim 4, characterized in that: The cooling shell (2) is fixedly connected to a third shell (801), the third shell (801) is communicated with the processing element (701), the third shell (801) is fixedly connected to the second shell (703) and is communicated with a fourth tube (802), the processing element (701) is provided with a circular array of second holes (803), and the second holes (803) are arranged obliquely.

6. A laser cutting device for metal sheet processing according to claim 5, characterized in that: A first cavity (901) is present between the processing element (701) and the cooling shell (2); a second cavity (902) and a first channel (903) are provided in the processing element (701); the first cavity (901) and the second cavity (902) are both connected to the first channel (903); the processing element (701) is provided with a ring array of nozzles (904); the nozzles (904) are connected to the second cavity (902).

7. A laser cutting device for metal sheet processing according to claim 6, characterized in that: Also included are: A collecting shell (1001) is fixedly connected to the third shell (801), the collecting shell (1001) is rotatably connected to the processing element (701), the collecting shell (1001) is provided with through holes arranged at intervals, plugs (1002) are provided in the through holes on the collecting shell (1001), the processing element (701) is provided with second channels (1003) arranged at intervals, and the second channels (1003) are connected to the collecting shell (1001).

8. A laser cutting device for metal sheet processing according to claim 7, characterized in that: The lower wall inside the collection shell (1001) is arranged in an inclined state to facilitate the collection of impurities.

9. A laser cutting device for metal sheet processing according to claim 7, characterized in that: There is an angle between the central axis of the second channel (1003) and the horizontal, and the distance between the second channel (1003) and the laser cutting head (1) gradually increases from top to bottom.

10. A laser cutting device for metal sheet processing according to claim 9, characterized in that: An interception net (11) is fixedly connected to the inner side of the processing element (701), the interception net (11) is in contact with the laser cutting head (1), and the height of the interception net (11) is higher than the height of the second channel (1003).

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